Automatically-controlled turbine fan-blower and damper.



C. T. CUE. AUTOMATICALLY CONTROLLED TURBINE FAN BLOWER AND DAMPER. APPLICATlOH FILED OCT. 15. 1914.

1,282,046. Patented Oct. 22, 1918.

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APPLICATION FILED OCT. 15. l9l4.

Patented 0013.22, 1918.,

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C. T. COE.

AUTOMATICALLY CONTROLLED TURBINE FAN BLOWER AND DAMPER APPLICATION FILED OCT. I5. 1914.

1,282,046., Patented Oct. 22, 1918'.

3 SHEETS-SHEET 3- 13% 14mm: w 2M0 m: NOIRII prrzns CmPMum-urnuv. wliumcmn n z man an crane CHARLES T. (JOE, OF KEARNEY, NEW JERSEY.

Specification of Letters Patent.

Patented Oct. 22, 1918.

Application filed October 15, 1914. Serial No. 866,763.

To all whom it may concern:

Be it known that I, CHARLES T. Con, a citizen of the United States, and resident of Kearney, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in an Automatically-Controlled Turbine Fan-Blower and Damper, of which the following is a specification.

This invention relates to an automatically controlled turbine fan blower and damper. It has for its object the production of a device whereby the draft for the furnace of a boiler is automatically controlled, by the steam pressure of the boiler. The speed of rotation of the fan varies with the steam pressure to be maintained, increasing when the steam falls below a predetermined point and decreasing when the steam pressure rises above said point. The damper is controlled simultaneously with the fan blower by the steam pressure in the boiler.

Figure 1 shows a front. elevation of an exemplification of the invention; Fig. 2 represents a right hand side view and section of Fig. 1 on the line 2, 2; Fig. 3 is a top plan view and section of Fig. 1 on the line 3, 3; Fig. 4 is a partial section of Fig. 2 on the line 4, 4; Fig. 5 is a section as on the line 5, 5 of Fig. 4; Fig. 6 is a partial plan view and section of Fig. 4 as on the line 6, 6, and Fig. 7 shows a partial enlarged section of Fig. 2 on the line 7, 7.

The invention is shown incorporated with my turbine fan blower, fully described in my patent application Serial Number 846,604 filed June 22nd, 1914. The turbine fan blower is here shown with the casing 20. Nozzle supports 24, 25, 26, respectively with the lugs 27, 28, 29 are formed with said casing. Valves 30, 31, 32 are respectively provided for the said nozzle supports. An exhaust pipe 37 and a safety valve 38 are connected to the lower portion of the casing 20. A

fan wheel 40 is supported, on the shaft 42 of the turbine fan blower. An air duct 43 is connected to the casing 20 and extends through the wall 44 of the ash pit of a furnace. So far the description covers the main elements described in my patent application Serial Number 846,604 aforesaid.

Piping 50, 51 and 52 respectively extends from the lugs 27, 28 and 29. A valve casing 55 is supported on a bracket 56 which extends from the casing 20. Ports 5", 58 and 59 are formed in the valve casing 55 and which have respectively connected thereto the piping 50, 51 and 52. A fluid or steaminlet pipe 60 is connected to the easing 55. A rear head 62 and a front head 63 are connected to the valve casing 55. A stuffing box with the gland 64 is provided for the head 63. A valve spindle 68 extends through the stufiing box of the head 63 and carries the oscillating valve 70 having the triangular port 71, which coacts with the ports 57, 58 and 59.

A bracket 73 is bolted to the wall of the casing 20 and supports a pressure cylinder 74 (preferable hydraulic) which latter is provided with plug piston 75. A cup leather packing 76 is fastened to the lower end of the said piston 75 by means of the screw 77. A lug 78 extends from the upper end of said piston. An arm 80 has one end fastened to the valve spindle 68 and its other end is pinned by means of the pin 81 to one end of the connecting rod 82. The other end of said connecting rod is pinned to the lug 78 by means of the pin 83. A weight 85 is formed with the connecting rod 82.

Bearings 88 and 89 are formed with the duct 43. An oscillating damper shaft 90 has one end supported in the bearing 88 and its other end is supported in a sleeve 91, which latter in turn is supported in the bearing 89.

A pair of hubs 96 and 97 are fastened to the shaft 90 and are formed with the damper wing 98. A hub 99 is fastened to the sleeve 91 and a hub 100 is loosely mounted on the shaft 90. A damper wing 101 is formed with the hubs 99 and 100. An arm 105 has one end fastened to the shaft 90 and an arm 106 has one end fastened to the sleeve 91. Lugs 107, 108 are formed with the duct 43 and support a slide bar 109 with the cross member 110 and bifurcated end 111. we pairs of links 112, 113 respec- 'cirely connect the cross member 110 with the arms 105 and 106. A bracket 120 is tastened to the casing 20 and supports a bell crank with the arms 121, 122. The arm 121 has an opening and a pin 12%; extending through the biturcateo end 111 engages said opening 123. The arm 122 of said bell crank has a bifurcated end 125 with the elongated openings 1%. The bifurcated end 125 straddles the connecting rod 82 and a pin 12? in said rod extends through the elongated. openings 126. A cover 1250 is bolted to the outer surface of the duct 13 to protect the arms 105, 106, slide bar 109 with their appurtenances.

A hydraulic pressure regulator s indi cated in its entirety at 135. its essential elements are a chamber 136, with a diaphragm from which latter extends a lug 137. [in arm 188 is pivoted at one end on the pivot 139 and it carries a movable weight 1&0. A three ported valve has coacting therewith the water inlet pipe 1&1, the water overflow pipe 1%2- and water regulating pipe 1&3. The latter pipe is connected to the lower end. of the cylinder 7%. A steam pipe 1&5 is connected to the chamber 136.

The operation of the automatically controlled turbine tan blower and damper may be recited, by considering the movable parts locatel as shown in the drawings. The steam in the boiler may be considered much above its normal pressure, and the valve positioned to cover all the ports 57, 58 and 59, by virtue of which steam supplied by the pipe 60, and piping 50, 51 and to all the nozzle supports 2%, 25 and 26 is cut off. After the steam has dropped below its normal pressure, water is allowed to pass through the regulator 135 and it enters the cylinder 7% through the pipe 1&3. Thereby the piston rises and the valve 70 swings in the direction of the arrow A, and the ports 5?, 5S and 59 are consecutively uncovered, and whereby steam admitted to the turbine cons cuti ely through the nozzle supports 24:, and 26. This causes the fan wheel to start rotating and gradually increase in speen, while said ports are consecutively uncovered. it the same time, the coaction of the connecting rod 82 and damper wings 98 and 101 gradually open the latter with the increased speed 01" the fan 10, so that an increased forced draft is pro duced, until a predetermined normal pressure obtained. The spc d of the fan wheel ons e 10 and the P0511 of the damper wings J 98 and 101 will tne be controlled by steam pressure in the boiler, the an wheel l0 decreasing in speed and the said damper wings gradually clesing, should the steam pres sure rise too Align 1" will thus be seen that the coaction oi the steam pressure w1tl. the

turbine automatically maintains the tan wheel i0 at the proper speed and the damper wings 98 and 101 at the proper inclination to maintain a predetermined pres sure in the boiler, and which predetermined pressure depends upon the position of the weight 1&0.

With the novel construction of the connections between the connecting rod 82 and damper wings 9S and 101, when the slide bar 109 moves in the direction of the arrow B, the said damper wings swing in the directions of the arrows C to collapse. That is to say the outer ends of said wings swing away from the tan wheel 40 when they collapse to increase the draft through the duct 43. lVith this" construction the damper wings 98' and 101 can be located very close to the tan wheel #10, without one interfering with the other.

Having described my invention what 1 dcto secure by Letters Patent and claim sire 's:

1. in an apparatus the combination. of a turbine, a valve to supply a driving. fluid to-the turbine, a tan wheel. connected to the turbine, a duct for the tan wheel, a pair of damper wings hinged in the duct, means to control the revolutions of the turbine with the coaction ot'. the pressure of the driving fluid, andadditional means coacting with the first means and with the pressure of the driving fluid to control the positions of the damper wings. I

in an apparatus the combination of a turbine, a valve to supply a driving fluid to the turbine, a fan wheel connected to the turbine, an air duct for the fan wheel, a damper wing hinged in the duct, means to control the revolution of the turbine coacting with the pressure of the said driving fluid and additional means coacting with the first means and said pressure to control the position 01' the damper wing.

3; In an apparatus of the character described the combination of a turbine and tan wheel, an air duct for the tan wheel, a valve to control a driving'fiuid for the turbine, apressure regulator, a pressure cylinder, piping connecting the two latter eledents, a piston for the pressure cylinder, connections between said piston and said valve, a pair of damper wings in the air duct coacting' with the tan wheel, and means connecting said connections and said damper wings.

111 an apparatus of the character described the combination of a turbine, a tan wheel driven by the turbine, an oscillating valve to supply a driving; fluid to the turbine, a duct for the tan wheel, an oscillating damper shaft extending through said duct, a damper wing fastened to said shaft, a sleeve movably supported on said shaft, a

second damper Wing fastened to said sleeve, Signed at the borough of Manhattan, in

an arm fastened to said sleeve and an arm the county of New York and State of New 10 fastened to said shaft, a link pinned to each York this 3rd day of October, A. D. 1914.

arm, a slide bar pinned to the other ends of 5 said links, a pressure cylinder, a piston CHARLES in said cylinder, connections between said Witnesses: piston and said valve, and other connections A. A. DE BONNEVILLE, between said connections and said slide bar. JOHN JEssIcH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

